FiiO E10 USB DAC and Portable Headphone Amplifier + BONUS L3 Line Out Dock (LOD) Cable for iPhone and iPod + Butterfly Photo MicroFiber Cleaning Cloth This Kit Includes Some Of The Essentials You Need To Take Advantage of Your New Headphones! Compact Aluminum Housing &lt;&gt; The mini USB connector lets you connect directly to your computer for driver-free operation An integrated bass boosting circuit and control switch let you add an extra 3dB of bass boost when you really want your music to kick &lt;&gt; Large Volume Knob The amplifier has an all-aluminum shell to resist interference and provide lasting durability so you can use the amp every day without worrying about reliability Supports standard dock profile on iPod, iPhone, and iPad. Does not support Shuffle. &lt;&gt; ButterflyPhoto Micro Fiber Cleaning Cloth - Safely Removes Fingerprints and Dust, Cleans Without Chemicals